Home / 71,389.88-107,090.08-18,799

Finding the Fourth Proportional to 71,389.88, 107,090.08 and 18,799

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Solution

The fourth proportional to 71,389.88, 107,090.08 and 18,799 is: 28,199.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,389.88 : 107,090.08 = 18,799 : x
  2. Step 2: Convert to fraction form
    71,389.88/107,090.08 = 18,799/x
  3. Step 3: Cross multiply
    71,389.88x = 107,090.08 × 18,799
  4. Step 4: Simplify right side
    71,389.88x = 2,013,186,413.92
  5. Step 5: Solve for x
    x = 2,013,186,413.92/71,389.88
  6. Step 6: Final answer
    x = 28,199.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.